#include "apue.h"

#define TOK_ADD    5

void     do_line(char *);
void     cmd_add(void);
int      get_token(void);

int
main(void)
{
     char    line[MAXLINE];

     while (fgets(line, MAXLINE, stdin) != NULL)
         do_line(line);
     exit(0);
}

char     *tok_ptr;       /* global pointer for get_token() */

void
do_line(char *ptr)       /* process one line of input */
{
    int    cmd;

    tok_ptr = ptr;
    while ((cmd = get_token()) > 0) {
        switch (cmd) { /* one case for each command */
        case TOK_ADD:
                cmd_add();
                break;
        }
    }
}

void
cmd_add(void)
{
   int      token;
   
   token = get_token();
   /* rest of processing for this command */
}

int
get_token(void)
{
   /* fetch next token from line pointed to by tok_ptr */
}

